2.4 GHz Board ------------- 1st VCO - +5 VDC, 1780 - 2100 MHz (CM464UM) 2nd VDC - +5 VDC, 330 - 430 MHz (CM704UM) 900 MHz Board ------------- 1st VCO - +5 VDC, 1170 - 1370 MHz (VOS-1435) 2nd VDC - +5 VDC, 330 - 430 MHz (CM704UM)